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Ordinance on Safety of Boilers and Pressure Vessels
Ministry of Labour Ordinance No.33 of September 30, 1972

Latest Amendments:
Ministry of Health, Labour and Welfare Ordinance No. 171 of July 16, 2001
In Japanese

Chapter III. First Class Pressure Vessels

Section 5. Alteration, Suspension and Discontinuance of Use

(Notification of Alteration)

  1. Article 76. When the employer who is to alter the shell, end plate, bottom plate, tube plate, cover plate or stay wishes to present a notification in accordance with the provision of paragraph 1 of Article 88 of the Law, he shall submit a Notification on Alteration of First Class Pressure Vessel (From No. 20) together with a first class pressure vessel inspection certificate and a document showing the content of the alteration concerned to the Chief of the competent Labour Standards Inspection Office.
  2. The provision of paragraph 2 of Article 56 shall apply mutatis mutandis to the case when the notification under the provision of the preceding paragraph is submitted. In this case, the phrase "notification on installation of first class pressure vessel, first class pressure vessel specification and documents prescribed by the preceding paragraph" used in item 1 of paragraph 2 of the same Article shall be read as "notification on alteration of first class pressure vessel and documents prescribed by paragraph 1 of Article 76."
  3. When the employer (excluding those described in paragraph 1 of Article 88 of the Law) wishes to alter any part of a first class pressure vessel prescribed in paragraph 1, under the provision of paragraph 1 of the same Article which is applied mutatis mutandis in paragraph 2 of the same Article, he shall submit a Notification on Alteration of First Class Pressure Vessel (Form No. 20) together with a first class inspection certificate and a document prescribed in paragraph 1 to the Chief of the competent Labour Standards Inspection Office.

(Alteration Inspection)

  1. Article 77. A person who has altered any part of a first class pressure vessel specified in paragraph 1 of the preceding Article, under the provision of paragraph 3 of Article 38 of the Law, shall have the said first class pressure vessel inspected by the Chief of the competent Labour Standards Inspection Office. However, this provision shall apply to the first class pressure vessel for which it is deemed that the said inspection is not necessary by the Chief of the competent Labour Standards Inspection Office.
  2. A person who intends to undergo an inspection under the provision of the preceding paragraph (hereinafter referred to as the "alteration inspection" in this Chapter) shall submit an Application for Alteration Inspection of First Class Pressure Vessel (Form No.21) to the Chief of the competent Labour Standards Inspection Office.
  3. The provisions of paragraph 2 and 3 of Article 52 shall apply mutatis mutandis to an alteration inspection. In this case, the term "the Director General of the Prefectural Labour Bureau" used in paragraph 2 of the said Article shall be read as "the Chief of the Labour Standards Inspection Office".

(Endorsement of First Class Pressure Vessel Inspection Certificate)

Article 78. The Chief of the Labour standards Inspection Office endorses, with regard to the first class pressure vessel which passed the alteration inspection (including the first class pressure vessels set forth by the provision of paragraph 1 of the preceding Article), the first class pressure vessel inspection certificate concerned, in respect of the date of inspection, parts of first class pressure vessel altered and the results of inspection.

(Change of the Employer etc.)

Article 79. With regard to an installed first class pressure vessel, when the employer has changed, the new employer shall, within ten days after change, submit an Application for Renewal of First Class Pressure Vessel Inspection Certificate (Form No.16) together with a first class pressure vessel inspection certificate to the Chief of the competent Labour Standards Inspection Office, and shall have the said inspection certificate renewed.

(Suspension)

Article 80. When a person who has installed a first class pressure vessel intends to suspend the use of the first class pressure vessel, and the period of suspension to be intended is over the validity term of a first class pressure vessel inspection certificate, he shall report the fact within the validity term of the said first class pressure vessel inspection certificate to the Chief of the competent Labour Standards Inspection Office.

(Inspection for Resumption of Use)

  1. Article 81. A person who intends to resume the use of a first class pressure vessel in suspension, shall, under the provision of paragraph 3 of Article 38 of the Law, have the said first class pressure vessel inspected by the Chief of the competent Labour Standards Inspection Office.
  2. A person who intends to undergo an inspection under the provision of the preceding paragraph (hereinafter referred to as the "inspection for resumption of use" in this Chapter) shall submit an Application of Inspection for Resumption of Use of First Class Pressure Vessel (Form No.22) to the Chief of the competent Labour Standards Inspection Office.
  3. The provisions of paragraph 2 and 3 of Article 52 shall apply mutatis mutandis to inspection for resumption of use. In this case, the term "the Director General of the Prefectural Labour Bureau" used in paragraph 2 of the same Article shall be read as "the Chief of the Labour Standards Inspection Office".

(Endorsement of First Class Pressure Vessel Inspection Certificate)

Article 82. The Chief of the Labour Standards Inspection Office endorses, with regard to the first class pressure vessel which passed an inspection for resumption of use, the first class pressure vessel inspection certificate concerned, in respect of the date of inspection and results of inspection.

(Return of First Class Pressure Vessel Inspection Certificate)

Article 83. When the employer discontinues the use of a first class pressure vessel, he shall without delay return the first class pressure vessel inspection certificate to the Chief of the competent Labour Standards Inspection Office.

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